[scponly] support for more generalized chroot exceptions in scponly

[John Kozubik]

Regarding the recent discussion titled:

Re: [scponly] I _still_ don't understand --enable-quota-compat

I am in favor of the idea that command-specific patches to allow things
like passwd to work in an scponlyc jail should be replaced by a more
general patch that allows an administrator to specify arbitrary exceptions
to the chroot.

Specifying the particular exceptions (quota, passwd) at compile time seems
like a good idea.

I would also like to express a desire for rdist functionality.

Thanks.

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John Kozubik - john at kozubik.com - http://www.kozubik.com